Extended-Length Turning Center

ABSOLUTE MACHINE TOOLS introduced Johnford SL-300L-II slant bed turning center with extended 40-in. turn length for longer part turning.  Johnford SL Series lathes are built with a one-piece Meehanite cast iron base for intense strength and added rigidity, and to dissipate heat from the part, improving dimensional accuracy.

The machine box ways are hand-scraped and all mating surfaces are coated with Turcite-B for exceptional fit, mobility, and precision. The SL-300L-II ballscrews are double nut type and pre-tensioned to eliminate thermal growth. The 30˚ slant bed design improves chip removal away from the work envelope and workpiece, space efficiency for more compact footprint design, and operator ergonomics for better part visibility and accessibility to cutting tools.

Other features include:

  • 22.8-in. swing-over bed design
  • 17.7-in. swing-over cross slide
  • 2-in. bar capacity
  • 40-in. turn length
  • 20 HP
  • 8-in., three-jaw hydraulic chuck
  • 12-in. tool turret
  • 787 IPM rapid traverse
  • Fully programmable tailstock, and
  • Dual hydraulic steady rests

Also included in the new SL-300L-II is a 12-station, bi-directional servo turret or optional BMT-55 servo live turret with 7.5-HP milling motor providing 0.2-second indexing as well as coolant through the tool holders.

In addition to the live tooling option, a true linear Y axis is available for off-center milling operations.  The Y axis is perpendicular to X in a right-angle design, providing true linear Y axis movement. Fanuc OiT-F Plus CNC control with 10.4-in. color LCD, full MDI keypad, Manual Guide i Conversational are all standard accessories. 

The precision spindle structure is mounted using precision double row roller bearings in conjunction with angular contact ball bearings for high rigidity and accuracy. The spindle quill inner and outer linings are precision ground for fine fitting with the spindle, thus ensuring extreme concentricity and accuracy. 

Three spindle configurations are available to suit any machining requirement:

  • 1.7-in. bar capacity, 6,000 RPM spindle
  • 2-in. bar capacity, 4,500 RPM spindle
  • 3-in. bar capacity 4,000 RPM spindle

Optional accessories include an automatic tool presetter, radial and axial live tool heads, contouring C axis with live tools, and more. The C-axis accuracy is 0.001 degrees. The live tooling used for the C-axis is backed by a 7.5 HP spindle motor.

Learn more at www.absolutemachine.com